re: lg dryer -- model DLG7188WM
was not heating up so we took the machine apart and vacuumed lots of lint.
then we left the duct off and the machine was fine with one exception.
the control panel does not change from normal and several of the buttons are inoperative.
it was like that for a long time.
am i right that the control board is shot.
if so how do i get the front knob off.
is there a screw under the metal insert on the knob.
works fine on normal and counts down and shuts off.
no other choices on the machine are available.